Kirby (NYSE: KEX) president exercises 2,660 RSUs, withholds shares

Rhea-AI Filing Summary

Kirby Corporation’s President and COO, Christian G. O’Neil, reported routine equity award activity. On January 24, 2026, 2,660 restricted stock units converted into an equal number of shares of common stock at a price of $0 per share as part of their vesting schedule. On the same date, 1,098 shares of common stock were withheld at $128.70 per share, consistent with a Form F code transaction typically used to cover tax obligations.

After these transactions, O’Neil directly beneficially owned 16,397 shares of Kirby common stock and indirectly held 5,670 shares through a 401(k) plan. The restricted stock units were originally granted on January 29, 2021, and vest in five equal annual installments beginning January 24, 2022, with the company able to settle each vesting in cash or shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

O'Neil Christian G.

(Last) (First) (Middle)

55 WAUGH DRIVE

SUITE 1000

(Street)

HOUSTON TX 77007

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
KIRBY CORP [ KEX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and COO

3. Date of Earliest Transaction (Month/Day/Year)
01/24/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.10 per share	01/24/2026		M		2,660	A	$0(1)	17,495	D
Common Stock, par value $0.10 per share	01/24/2026		F		1,098	D	$128.7	16,397	D
Common Stock, par value $0.10 per share								5,670	I	401(k)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	01/24/2026		M			2,660	(2)	(2)	Common Stock	2,660	$0	0	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive cash or one share of common stock of the issuer.

2. These restricted stock units granted on January 29, 2021, vest in five equal annual installments beginning on January 24, 2022. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable on each vesting date.

	Ronald A. Dragg, Agent and Attorney-in-Fact	01/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Kirby (KEX) report for Christian G. O’Neil?

Kirby (KEX) reported that President and COO Christian G. O’Neil had 2,660 restricted stock units convert into the same number of common shares on January 24, 2026, at a price of $0 per share as part of a scheduled vesting.

How many Kirby (KEX) shares were withheld to cover obligations in this Form 4?

On January 24, 2026, 1,098 shares of Kirby common stock were disposed of in a transaction coded F at $128.70 per share, which typically reflects shares withheld to cover taxes or similar obligations on the vesting event.

How many Kirby (KEX) shares does Christian G. O’Neil own after this transaction?

Following the reported transactions, Christian G. O’Neil beneficially owned 16,397 shares of Kirby common stock directly, and an additional 5,670 shares indirectly through a 401(k) plan.

What is the structure of the restricted stock units in this Kirby (KEX) Form 4?

Each restricted stock unit represents a contingent right to receive cash or one share of Kirby common stock. The units at issue were granted on January 29, 2021 and vest in five equal annual installments beginning January 24, 2022.

Who filed the Form 4 for Kirby (KEX) and what is their role?

The Form 4 was filed for Christian G. O’Neil, who serves as President and Chief Operating Officer of Kirby Corporation.

Are the restricted stock units in Kirby (KEX) settled in cash or shares?

For the reported award, cash or shares of common stock of Kirby may be delivered at each vesting date, at the election of the issuer, on or as soon as practicable after vesting.